Signals and controls for passenger and freight elevators and for other purposes



Feb; 1s, 1936.

1 w. N. D lcKlNsoN v 2,030,912 SIGNALS AND vCONTROLS FUR PASSENGER AND EREIGHT ELEVATORS AND FOR OTHER PURPOSES Filed June 2o. 1931 I v sheets-sheet ,1

Feb. 18, 1936. w, N mCKpNsoN Y 2,030,912

smNALs AND CONTROLS FoRyNssENGEH AND FREIGHT' `ELEVNTORS AND Fofgor'HER PURPOSES Filed June 20, 1931 Sheets-Sheet 2 INVENTOR Feb. 18, 1936. w. N. cncKlNsoNY SIGNALS AND CONTROLS FOR PASSENGER AND FREIGHT ELEVATORS AND. FOR OTHER PURPOSES Filed June 20. 1931 7 Snelste-Sheet 3 'A -mvENzrvo-J. Juanan-lou Jun-g. 7M

Feb; 18, 1936. w. N. DlcKlNso l 2,030,912

I smmms AND commons Fon pAssENGER Ann FREIGHT ELEvATons un Fon OTHER PURPOSES Filed June 20, 1951 7 Sheets-Sheet 4 Feb; 18, 1936.

. w. N. DlcKlNsoN 2,030,912

SIGNALS AND CONTROLS FOR PASSENGER AND FREIGHT ELEVTORS AND FOR OTHER PURPSES Filed June 20. 1931 7 Sheets-Sheet 5 INveNToR Feb. 18, 1936.j wfN. DlcKlNsoN 2,030,912 v SIGNALS AND CONTROLS FOR PASSENGER AND FREIGHT BLEVATORS AND FOR OTHERv PURPOSES Filed June 20, 1931 7 Sheets-Sheet 6 INVENTOR Fgb. 1s, 1936.-

, w'. N. DlcKlNsoNl SIGNALS AND CONTROLS FOR PASSENGER AND FREIGHT ELEVATORS AND FOR OTHER PURPOSES Filed June 20, 1931 '7 Sheets-Sheet 7 INJULATIM ofeconomical sa-mai Fb.'1s,'1936 UNITED s'rATlezsV PATENT fOFFICE:

' B IGNALS AND CONTROLS FUE PASSENGER AND 'FREIGHT QTHEBVPUBPOSES ELEVATOILS AND `FOB.

William Noble Dickinson, Rockville, Outre, N. Y.

a Pamamos June zo, 1931, sum No. 545,159

25 Claims. (Cl. 177436.

gv The desirability 0f my System will b e described as related to a multiplicity of elevators. lIt provides features not heretofore available, eil'ects a substantial savingA in material 1and labor and involves the use of standard parts, which permits assembly.

' A typical arrangement of flashlight signals as heretofore employed includes` an Up and aV Down push button at each intermediate landing and an .p p and a Down" signal lantern over the door-leading to each elevator. atl each j intermediate landing; kwith a single push button; and a single lantern over each door at terminal landings. The elevators are solidly enclosed and .the landing doors are opaque. 'I'he pressure oi a landing button releases a iioor contact on a master controller which is electrically connected to individual controllers. These latter are megeared to each elevator and, throughv -tion when such occurs. Also, without moving from his position or turninghishead, he isiurnished with both audible and visual indication of the approachoi' the serving elevator, and audible andv'lsualindlcationastowhetheritistothe' left or to the right of the push button, or across the hall, and the individual elevator is identiiied. One elevator. only. signals a landing in either direction at me time. Qne controller, only,V is

' required and it may be located in a vertical or ini a horizontal position or at any angle necessary to permit o! its beingplaced within space'available, and is adjustable for various conditions.

In a sixty-door sixteen elevator installation,

with one set of push buttons located midwayin f each bank of eight elevators on opposite sides-of a landing, about seventy-ve percent oi the electric lamps and conductor lengthare eliminated.

In general, my controller includes one traveling magnet or solenoid corresponding with each elevator, and two separately mounted cross-arms (one-for un 'and one rar om),

and convenient manufacture andv with each door. Each cross-arm contains a projection or contactingiinger corresponding with each elevator. Each traveling solenoid is geared to the mechanism of its elevator and each croarm is pivoted on stationary supports and sets at right angles to the paths of the solenoids. Provision is thus made for electrically relating any elevatorto any floor for either direction o! elevator travel. Y

At the landings, each push button is provided with a transparent or, translucent iace, an electric globe, reectors, an electro-magnet and `a polarized magnet, which latter operates light bailes and audible signals. Certain sections of the push-button face plate are transparent or translucent. I

On the pressure of a landing push button, the corresponding cross-arm on the controller is rendered electrically sensitive, and the push button becomes and remains illumined.l On'the approach o! an elevator in the desired direction. a wiper-associated with the traveling solenoid, oontacts with the sensitized cross-arm and causes the crossarm to rotate onits axis; thus moving the contact fingers corresponding with/.other eleagainst interference. The lrelated movements then cause electric impulses, corresponding (in number and in direction o! current iiow) with the solenoid in contact with the cross-a'm,l to be 3s transmitted to the related polarized magnet at the landing push button.- The direction oi impulse movement of the polarized magnet armature determines the set o! audible and visual signals' which is'afl'ected.l The number of transmitted impulses determines the number of strokes on a sound producing medium, or the selection ot an announcement by reproduced human speech, and also determines the number oi' light baille openings whichwill be cleared. If the serving elevato;n 1s m the bank elevators on nde of the landing on which the actuated .push button is located, and to the left of that button, a strip ot light will appear, advancing in `steps on the push button face plate to the left of the actuated button. 'I'helengthoi'thisstripoflightisde- .terminedbythenumberofimpulsea I fthe servlngelevatoristotherightthestripoflight willextmdtotherightfihe'coloroitheilluniningoi'thepushbuttonandofthestripof lishtisditl'erentforthetwo-buttons.

vIftheservingelevatoi'isinthebankoteie- 'vatorsonthesldeoithelandingopposltetothat `onwhichtheactuatedbuttonislocated.aaepa 25 vators out oi' contacting position, and provides rate space on the push buttoni'ace plateis ills;

' vided at the push button plate at the side ofthe landing at' which the approaching elevator is located.

'It will be apparent that for a total of sixteen elevators positioned as described, the maximum number of impulses required from any traveling solenoid is four. If, instead o! being opposite, the doorways of remote elevators are behind pro, jecting columns or around corners, the wording of the separate indicating visual signal is changed, or the signal is of a distinctive color. the distance between push buttons is considerable, a distinctive audible signal accompanies the visual Remote signal. If -some of the remote elevators are opposite and some around the corner, the wording which appears at the Remote visual signal face corresponds with the location of the serving elevator.

At the proper time, the signals in the car function and, after the landing has been served, all parts are automatically returned to normal.

No disrupting of a live electric circuit takes place at any push button, and at the points in the .system at which the opening of a live circuit takes place, a quick action is provided. The push buttons and their associated parts are enclosed in dust-prooi and damp-proof cases and the controller parts are also protected. These provisions, together with concentration of observer and observed, and the aid of reflectors, permit of dependable use of small and light weight parts and the entire system is adapted to mass production and, if desired, to mass shipment of parts and local assembly.

'Ihe nature of the system permits of the additionv of other usefulfunctions.

The foregoing and other features of my invention will now be described in conjunction with the accompanying diagrammatic drawings.

The description of each of the figures should read:

' Fig. 1 is a front view of a push button box, showing an up and a down push button, .visual signal spaces adjacent to each push button and slotted plates covering audible signal elements.

Fig. 2 shows the interior of the push button box.

Fig. 3 is a side view o1' the push button box.

Figs. v4 and 5 show the hinged mounting of the cover of the push button box. The former shows the box with the cover closed and the latter with Figs. 8 and 8a are side views showing the mechanical relation between the push button and its corresponding electrical contact, holding magnet and the releasing mechanism for retuniingd Vthe light barrier to normal position.

Fig. 9 is a side view, showing the relative position of the sources of light for illumining the Remote visual signal above the up button or below the down button.

Fig. 10 is a front view showing that the contact arm moved by the push button is recessed to per- 2,cao,91a i p mit the mumming of the, push button from its source of light.

Fig. 11 is a front view of the carrier with its associated guides, contacts and mechanism for moving the carrier in geared relation to the movement of its corresponding elevator car. This carrier is a part of the controller and there is one carrier corresponding with each elevator car. Y

Fig. 12 is a side view of Fig. 11.

Fig. 13 is a. viewlooking down upon the controller and showing the guides corresponding with eight carriers, together with the relative positions of the cross arms corresponding with the several oors.

Fig. 14 is a front elevation of Fig. 13.

Fig. 15 is a plan view of a pivoted plate which supports the bell-crank contacting levers on the upper part of the carrier. One bell-crank contacts with the up cross-arms when its corresponding elevator is traveling up, and the other bellcrank contacts with the down cross-arms when its corresponding elevator is traveling down.

Fig. 16 is a front view of the carrier, showing the mechanism for returning a cross-arm to normal.

Fig. 17 is a side view of Fig. 16.

Fig. 18 showsthe manner of engagement of the mechanism in Fig. 16 with an arm which is mounted on the stationary guide, and which arm is moved into engagement position by the rising of the solenoid plunger on the carrier.

Fig. 19 is a variation of the arm mentioned in describing Fig. 18, and is employed at terminals.

Fig. 20 shows the manner in which a cross-arm pivots on the left hand side of the controller as shown in Fig. 14.

Fig. 21 shows the manner in which a cross-arm pivots on therighthand side of the controller as shown in Fig. 14. It also shows how the movement of the cross-arm on its axis performs certain electrical switching functions on the righthand pivot block. The electrical connections are shown in Fig. 54.

Figs. 22, 23, 24, 25 and 26 show details of the righthand pivot block. Fig. 27 shows a side view of the carrier with a reversing switch mounted thereon. 'I'his reversing switch is functioned at terminals by cams Y M6 in Fig. 14.

Fig. 28 is a plan view of Fig. 27.

Fig. 29 is a front view of the reversing switch in Fig. 27.

Figs. 30, 31 and 32 are details of the rocker arm and stationary cam for Vfunctioning the reversing switch in Fig. 27. 5* Y' Figs. 33, 34, and 35 show details'having to do with proper signaling when a car is at a terminal oor. f

Figs. 36, 37, 38 and 39 show the electrical relations obtaining between positive and negative line under four diierent conditions in the functioning of the system.

Fig. 40 shows the wiring connections between the push button boxes and the several parts of the controller.

Figs. 4l, 42, 43, 44, 45, 46, 47, 48 and 49show details of the controller.

Fig.'50 shows the method of providing first an audible and then a visual signal on the approach of a car to a callingvoor.

Fig. 51 is a wiring diagram referring to two Remote locations.

Fig. 52 indicates the electrical connections between a receptionists desk and the elevator push buttons at the corresponding floor.

Fig. 53 shows the electrical connections for providing human voice announcements `at landings. Fig. 54 shows the electrical connections of the `righthandpivot block shown in Fig. 21.

Rg. 55 shows the method of providing for night service signals.

In the drawings, similar parts are indicated by similar reference characters in the several ilgures.

Figures 1,. 2, 3, 4, 5 and 6 show several views of a push button box. Larger scale drawings of A working parts are shown in other figures.

Figure 1 shows the face plate of apush button box suitable for the sixteen elevator installation mentioned. I is the push button, II is the iliuminable face of the push button, I is an illuminable face in the face plate, oi' which spaces four Fig. 2 shows the piish button box with the front surface of face plate removed. 5 is the vcasing of the push button box. 6 is a section which is part f the face plate. This webbed section stiffens the face plate and supports internalparts. I is a light bailie,'oi which there arefour. Il. is an electro-magnet, ofwhich there are two; one corresponding with each button. 9 is a polarized electro-magnet: only one is shown, but there are two; one corresponding with each button. I2 is the polarized amature oi the magnet, which is normally' heid in midway position between the magnet polepieces by springs I3, and which moves` an arm Il, carrying two pawls I5; the pawls beingarranged tol engage in opposite di rections and being mounted on opposite faces of ethe arm I4. IB indicates the location of supports for locking devices for two toothed segments actuated by the pawls I5. These segments rotate on supports independently mounted, and eachis positioned to be operatively engaged by its corresponding pawl I5 and locking device. An extension attached to the hub of one segment extends to the right and an extension attached to the hub of the other segment extends to the left. 'I indicates the position of the axis of rotation of these two segments and dotted lines I8 indicate the a angular movement of each hub extension. Il is an insulated electric switch. Only one of these switches is shown, but two are supplied in conjunction with each button; being actuated by one of the above described hub extensions. Il is a shaft on which are securely mounted the polarized armature I2,

thearm Il carrying the two pawls, and hammer actuators 2I. 22 is the recess in the face plate.

Only one recessisshown, but there isone corre spending with each button. 23 is a hinged hammer arranged to impinge upon a sound producing element which I have shown as a clock coil 2l. There are two hammers and t`wo clock coils in each recess. The upper and lower halves of the push button box are'identical, save for the ar-v .move by gravity towardthe horizontal middleof vsets of buttons and illuminable spaces.

Hence; while the two down push button move by spring pressure applied to their suspensions, toward Ithe horizontal middle of the box when permitted to do so by.

their corresponding arms as represented by lines I8, and arereturned by them against spring pres- I permit, rather than force. the movement of light bafiles 'I and their suspensions, to open light ports, inorder to reduce the mass of the parts to be moved by the quick magnet actuated movement in opening the light ports. `The movement of the suspensions and bames may follow more leisurely. i

Fig. 3 `shows a side elevation of the face plate with parts attached. 26 is an electric globe for illumining Remote" space 2. 21 is a stationary tapered metal light baille extending between movable light baille Iand'illuminable spaces I. Stationary vlight', baille 21 is vdivided to, correspond with the several illuminable spaces I. The purpose of tapering is to reduce the necessary movement of movable light baille .1. Radiation' of light rays when projected through the small opening of light baille space of 21, illumines the entire area of the'corresponding illuminable space I.

When direct current is passed in one direction through polarized magnet 9.. its pofarized armature I2 is moved'in one direction, and when' movement takes place in arm I l and hammer actuators 2|. The pressure of springs I3 returns all to normal position when magnety 9 is de-energized. Each energizedv movement of arm I4 causes one of the pawls I5 to move its correspending toothed segment 28-the distance of one tooth on the segment. As will be later described.

this movement being transmitted through the extension attached to the hub of the segment permits corresponding normally openswitch I9 to close, permits corresponding light baille i to a1-` n passed in the oppositev direction its armature is moved in the opposite direction. Corresponding fion, segment 2B will be advanced another tooth,

the second space I from the button will be il- .lumined and a second blow wi.l be delivered to spaces I, and the third and fourth sounding of clock coil 2l would similarly result from the third and fourth energizing of magnet 9. 1

The relative positions of electro-magnets 8 is indicated by end views'of their respective coils. 29 is a stationary light baille between the two 3i! is a threaded rod, lturned by a key inserted through opening .4 and engaging in a boss on the inside of casing l for the purpose of drawing face plate Fig. l into compression contact with packing 3l, or otherwise locking and unlocking face plate Fig. 1 with respect t'oits casing i.

Fig. 4 is a section !vie\w of the side of casing 5, showing conduit entering from the hoistway -side of the box. The flexible electrical'conductors entering the box are sealed at the conduit opening, packing rings are provided at each push button, the opening between recess 22-and the .interior of the push button boxis lled with shaft 34, which may be packed if necessary, and

the interior is sealed at all other points by packing 3| against dust. dampness or gas.

By means of hinged arms 32, face plate Fig. 1 with the parts mounted thereon is supported in casing 5 and may bequiclgly opened out as shown in Fig. 5, exposing all interior parts to view and holding them in convenient position for any purpose.

Fig. 6 is a plan view showing the divisions of stationary light baie 21 on one side of the push button. A similar light baiiie is provided on the opposite side of the push button, but this latter has been cut away to show the relative position of the hub extension of segment 28 and the manner in which it intercepts one arm of the hinged suspension for movable light bale 1. The two arms constituting this suspension 'are secured to one shaft which hinges at 33. 20 is an electric globe which constitutes the source of light for illumining one push button and its related illuminable spaces other than Remote signal 2. indicates reflectors for directing rays from source of light 20, each to its corresponding illumlnable space I to the left of its corresponding button, when the position of corresponding movable light bafe 1 permits such rays to pass. Similar reflectors are provided at the right. 36 are reflectors for directing rays from source oi' light 29 to illuminable face II of push button I6, and to reflectors 35. A separate source of light and a separate set of associated reflectors is related to each push button. While not always shown, I providey reectors for concentrating or directing rays of light in conjunction with all sources of light employed throughout the system.

Figs. '7 and '7a are front elevations and Figs. 8 and 8a are `side elevations of certain push birtton box parts. In Fig. 8a, 31 is the coil, 38 is one of the polepieces, and 39 is the armature of one of the electro-magnets 8. Fig. 8 shows the coil of magnet 8 with the polepiece removed to permit a clearer view of the other parts. Armature 39 is here shown in energized or magnetically closed position against the tension of spring 4Il.

having been brought to that position by momentary pressure of push button I0 and intermediary 4I, which latter, together with the push button, were returned to normal by spring I 61 immediately on the removal of manual pressure on push button Ill. In closing, insulated extension 42 of armature 38 closed switch 43, which is made up of two leaves bent at 90 degrees to permit of their being attached to the magnet support. The closing of this switch completed an electric circuit which retained the electro-magnet in closed position. Also attached to armature 39 is 90 degrees arm 44 supporting pin 45 and the lower end of rod 46. 41 is another 90 degrees arm pivoting at 48, having its horizontal section supported by pin 45, and itself supporting rod 49. As shown,rods 46 and 49 are in their retracted position. When the electric circuit through coil 31 is opened, spring 40 causes arm 44 to 'rotate on its axis 5I! and extend rod 46. Simultaneously, pin 45 causes arm 41 to rotate on its axis 48 and extend rod 49. 33, of movable light baille 1.

Referring to Fig. 7, pawl I5 on the front face of arm I4 normally rests, in the recess of tooth 52 of correspondingly broad faced segment 28, which is normally spring-held against a stop. Its hub extension at right angles to the path of suspension 5I prevents the latterfrom lowering light bailie 1. Rod 46 being in retracted position, pawl 54' on lock I6 is ready to engage in part of 5I is the suspension, pivoted at broad tooth 52, if pawl I5 already engaging in broad tooth 52 advances it to engagement position. Amomentary electric impulse in polarized magnet 9 causes segment 28 to be advanced one tooth, when it is immediately locked by pawl 54. The outer end of hub extension 53 moves downward a sufficient distance to permit switch I9 in Fig. 2 to close, and to permit suspension 5I to lower movable light baffle 1 a sufllcient. distance to clear the light portl of corresponding space I. Successive impulses clear successive light ports to the left of the push button. A similar arrangement' to the right, and electric impulses in the opposite direction through the polarized electro-magnet will open a switch I9 and clear light ports to the right of the push button. Without further provision, the movement of arm I4 to the right, to function the segment to the right,V would also carry the pawl I5 on the front face one tooth to the rightand interference with its corresponding segment would result during the return stroke of arm I4 to midway position. Referring to Fig. 7a, an extension 55 on pawl I5 mechanically contacts with lug 56 attached to locking device arm I6 and raises front pawl I5 out of engagement position on theright hand stroke. A similar provision prevents interference on return from the left hand stroke. When magnet 8 is deenergized, rod 46 is extended and, with it, lug 56 which impinges at an angle with pawl extension 55, and also raises arm I6 pivoted at 51, carrying pawl 54, and Whichever segment has been moved out of normal position is returned to normal by its spring, and simultaneously any open light ports are closed, switch I9 is opened and switch 43, which has opened with the return of armature 39 to normal, has darkened source of light 20 which is in series with coil 31.

Fig. 9 shows two electric bulbs 26 in recess 22, instead of one. These are separated by a light barrier and permit of two separate Remote" signals in space 2. This permits of indicating` that the serving elevator is opposite or that itis around a corner.

Fig. 10 indicates that intermediary 4I is forked, to avoid interference with the passage of rays from source of light 20 to push button illuminable face I I.

I will now point out the construction of the controller to which the previously described push button box is electrically connected. Here also I show assembly drawings, and larger' scale drawings of parts.

In Fig. 1l I show a front elevation of a traveling carrier 58 with four insulated guide shoes 59,

running on left hand guide 69 and right hand guide 6I. This carrier supports solenoid 62, whose plunger 63 and its extension 64 are guided by frictionless rollers 65. On the bottom of plunger 63 is cup 66 sliding in air chamber 61 at the bottom of which is located adjustable valve 68. The plunger freely but is checked in its descent by compression of air in chamber 61. 69 is a cable which leads to a counterweight which balances can'ier 58, but is insulated from bothl 5 at contact pivot block 14.

12, through respective light spring contacts 19 attached to the same base as the bell cranks, whichbase is\swive1 plate 19.' Contact 18 as shown is for the down bell crank. For the up bell crank, the vertical position of a corresponding contact 19 is reversed: that is; the free end of this contact 1B is below, instead of above. On the up trip, bell crank 16-alone contacts with cross-arms, and thisl contacting takes place with up cross-arms 1li only. On the down trip, theL contacting is confined to bell crank 11 and down `crossarms 1|. When the contacting element of the carrier contacts with a cross-arm which has been sensitizedby the pressure of a 'push 5button connected to that cross-arm, an electric circuit is completed through solenoid 62, whose' plunger jumps up and, through' the medium of insulated U-arm 8|! mounted on plunger extension 64, impinges with whichever bell crank is D in alignment with U-arm 89, and rotates the contacted cross-arm on its axis 8|. This moves all other contacting fingers on that cross-arm out of contacting .position for all other carriers and the cross-arm is locked in this rotated position crank is actuated, it is locked in extended' posiclcsed contacts 93a are simultaneously opened.

) Electrical contact is thus maintainedbetween the cross-ann and swivel plate 19, through the medim of light spring wiper contact 18, whose free end is preventedfrom extending too far, by stop,82, which is also attached to the swivel plate i 19. Left guide cam 83 is, adjustablysecured to left hand guide 69, and has a hinged portion 84. `In rising, the top of plunger extension 6I impinged upon cam setter 85, normally spring-held in position shown, which in turn impinged upon I hinged portion 84, moving it to the position in dicated by the dotted line and bringing it into contactl augment with contacts 96 andv 81 mounted on thetarrler, where hinged portion 84 was locked; The rotation of the cross-arm caused a switch on contact pivot block 1l to interrupt the circuit through solenoid 62, whose plunger immediately started to'descend, leaving the actuated beu crank 1cm 11,- and the cam hinged portion 8l in` locked. position. ImpulseI generator contactor .88 is mounted on, but insulated from plunger extension 64, which also carries insulation' block es. Insuiated impmse."

generator arm, 9|| is pivoted on the carrier with a friction washer bearing against its hub. During the rise-'of Vthe plunger, no'electrical contact existed betweenl 99 and 99. During the descent of the plunger, arm 90 contacts with contacwr 88 and, as the latter .successively contacts with stationary contacts 9| mounted on the carrier, electric impulses are transmitted to a conductor connected to as many o! these contacts as there may be on that can'ier; which may be one, two, three or four, -depending upon the position oi its corresponding elevator to the left or to the right of the push button box.

When the pivot block switch opened the cir-4 'cult through solenoid V82, it transferred the cross- Immediately the bell approaches the bottom oi' its stroke. insfated strap 92 extending from the top of spring'retumed to normal, and with -it, wiping spring 19. 'Ihe downward movement of tripper bar 93 also returns' contacts 93a to their closed position. 94 is an insulated reversing switch mounted on .the carrier. 95 is a sprocket Awheel meshing with a driving chain actuated by the corresponding elevator mechanism. Secured to its shalt is a beveled' gear which meshes with another beveled gear `secured to screw 9B, which extends back of the carrier for the fullheight of the latters travel. 91 is a friction nut, threaded on screw 96. This friction nut, which is a. well lrnown*v device in elevator signal practice, bears at top and bottom against shoulders 98 extending from the back of 'the carrier frame, and

has a projection 99 which extends through an 'ment of its corresponding eleva-tor mechanism, friction nut 91 rotates with it until a positive1 stop is encountered, when the continued rotation of screw 96 causes nut 91 to travel up or down and moves with it carrier 58. While rotating with the screw it rotated swivel plate 19 on its insulated axis |90. mounted on the carrier. In moving through part of a lrevolution, swivel plate 19 brought either bell crank 16 or bell crank 11 into contacting position with its respective cross-arm fingers 12 and into impinging position with its respectige'leg or U-arm 90, and through projection |0| mounted on the swivel plate, moved the plvoted arm oi' `reversing switch 94 Ainto contacting position with one or the other of its two, sets 'oi' stationary contacts.l No pro- .vision has yet been shown for returning locked .hinged portion 94 to normal, but this will be later described, as will also the purpose of stationary -contact |92 mounted-on the carrier..

'Ihe combination of provisions for a multiplicity of elevators results in a controller `whose guide and cross-arm arrangement, in combination with the arrangement oi' other parts, is shown in plan view Fig. 13 and iront elevation Fig'. 14.

Fig.' 13 shows the controller with the top removed and the arrangement corresponding with two banks oi four elevators each. For two banks of eight elevators each, the width of the controller would be increased and, with it, the reach of the cross-arms, but the`other previously described equipment would remain the same. Eig. 14 shows one face of the controller, of which both faces are substantially the same, except that hinges and contact pivot blocks are at the same side of the controller, for convenience in eilectlng electrical connections. r|93 is a shaft, instead ot a sprocket chain, geared to the elevator mechanism, and has secured to its controller end a bevel gear which meshes with the bevel gear secured to screw 99, and thus furnishes related movement to the carrier. |94 indicates the position of the counterweight cable. `The supports for the cross-arms aremounted on a web stiiened trame lll! hinged at |06, which is on the contactinglin'e betweenthe carriers and the cross-arms. 'When closed, this frame seals against the controller side walls and its top vand bottom. Hinged at |01 on trame |95 are doors |99 with glass fronts which, when closed, seal against frame |96. Hinges |99 have tubular centers through which the electrical conductors pass to compartment |09, into which the hoistway electrical conductors ,are also led through conduit sealed at the point of entrance, and in this compartment certain auxiliary magnets are mounted. This compartment is provided with a glass front door, which, when closed, seals against the controller walls, and all of the doors and the hinged frames may be locked. There is thus provided a protected controller, all parts of which are-open to observation. To permit of swinging the hinged frame without eil'ort and without damage to the conductors leading to the cross-arm contact pivot blocks, these conductors are twisted into a cable and some distance intervenes between the point oi' attachment of this cableto the frame and the tubular hinge. Counterweight sheave |09 is insulated from the' controller and there is an insulator in the cable between this sheave and the counterweight supparts of this returning device attached to the carrier and Fig. 17, which shows a side elevation.

of these parts, must be considered in this connection. Mounted on each carrier are two side bars I III; one slotted at both ends and the other slotted at' one end. In these slots are adjustable supports for the' bearings of shafts "I and ||2. Secured to shaft ||I`are arms IIB and IM, and secured to shaft ||2 are'arms ||5 and Illi. I have previously described the manner in which the jumping up of solenoid plunger 63, on the carrier, moved hinged portion 8l on lett hand guide cam 83 and left it locked. On the up trip, the continued travel of the carrier brings arm IIS into mechanical contact with hinged portion 04 and causes arm Ill to rotate on axis Mounted on up cross-arm 10, in Iaddition to contact nger l2 is returnfinger ||1, corresponding with each carrier. Arm III does not contact with return nnger ||1 either when cross-arm 10 is in normal position or when it is in rotated position, except when arm III is rotated on its axis when it returns the cross-arm to normal. Fig. 18 shows the manner of the engagement of its related arm I I3 with hinged portion 84 of stationary cam 03. Catch IIB on armv I I5 engages with insert leaf |I9 on hinged portion 04, when the latter is in locked position. 'I'he continued movement of the carrier, not only causes related arm H4 to rotate on axis I|| and thus return cross- -arm 10 to normal, but in rotating on axis I I I, the

arc described by the catch extremity of arm III causes it to bear upon spring lock |20 on cam 83 and release hinged portion 8l, which is springreturned to normal. Afterpassing cam 83, connected ams ||3 and III are spring-returned to 'Y When in locked position, tip |2I on hinged por- 21 the other end. The cross-arm construction also include the momentary interrupting of the tion BI, which is in electrical' connection with left hand' guide, electrically contacts with contacts 8i and l1 on the carrier, when the traveling positional' the carrier. causes this to occur.`

Fig. 20 shows one end of a cross-arm and Fig.

shown is triangular tubing with the contacting and return ngers spot-welded thereon.l This is made up in long strips, cut to length to suit the controller to be assembled, fitted with cross-arm ends, adjusted in a jig and is ready for the con.

troller. Cross-arm end |2| nts inside of this tubing and is secured, and forms a pivot bearing.v

Cross-arm end |22 is similarly mounted, and includes a pivot bearing cam |23, pin |24 and pin |25. Fig. 23. |26 is a movable pivot.

Figs. 21, 22 and 24 show three views of contact pivot block 14. Both 13 and 1I are shown as double pivot blocks to serve two cross-arms, but

A side elevation of this end is shown in 'j either may be halved to serve one cross-arm. j

These pivot blocks are of moulded insulating material, with open slots to permit of their being slipped onto the side of their respective supports 15, 4where they are secured by setscrews |21.

Supports, 15 are suitably scored to facilitateI without shutting down the elevators, one rack is used for removaland another rack, loaded with duplicate cross-arms, is used for replacement. For a single cross-arm, the rack is already adjusted with its locating lingers arranged to bear against the upper faces of the respective pivot blocks, and against supports 15, and it is thus supported. The cross-arm is then manually rotated out of contacting position for the carriers, spring grips on the rack then grasp the cross-arm without disturbing its alignment with its pivots,l the pivots |25 are manually withdrawn and the rack, with the cross-arm, is removed. The other rack, holding a similarly secured duplicate cross-arm, is'placed in position, the pivots |26 are pushed into place, the spring grips grasping the cross-arm are released and the cross-arm is manually rotated to contacting position with the carrier. The new cross-arm is now in service, and the rack may be removed. The functioning of the system has not been interfered with save in respect to such contacting functions as might possibly have been called for by that cross-arm position during the brief period in which no crossarm was in contacting position to respond. For

the handling of several cross-arms at one time,

if the vertical distances between pivot blocks vary to correspond with unequal distances between oors, the vertical distances between the spring grips on the rack frame are rst `adjusted on both racks, after which each cross-arm is handled as above described.

In addition to pivoting, the functions o1' contact pivot block 1I 1n conjunction with its corresponding cross-arm, are tov provide an electrical connectionbetween the cross-arm and the corresponding push button circuit when the cross-arm is in normal position, and when the cross-arm is rotated, to transfer this connection to the corresponding polarized magnet; to open a non-interference circuit between the two faces of the controller when such controller arrangement is employed for two banks of elevators connected to the same system, and to lock the cross-arm in rotated position. These functions continuity of the corresponding push button circuit across the current Supply line at the time of the return of the cross-arm to normal; in order to provide for the simultaneous` return of acflyers |29 and |30, the latter being insulated from the support. Normally, these two flyers are held in the same angular pivoted position on their lcommon support by contact springs |,3| and |32, which are always in spring contact and electrical contact with their respective flyers. @hen the cross arm isrotated',l` pin |24 actuates flyer |29 on the axis of its support |23, and through insulated plate |33,f which is a part of flyer |29,

' rotates its yer |30 and thereby maintains continuity of electrical connection between springl contacts |3| and |32. Flyer |30 is also brought into connection with contact |44 which is per- -manentlv connected to spring contact |3|.l On'v the opposite side of the axisfof yer |30 is in- 'sulated projection |34 which is'engaged by spring pressed catch |33, pivoted onstud |33, which is mounted on support |23. Simultaneously, insulated finger |31 on flyer-|29 has moved contact |33 out of elgctrical connection with contact- |39 and into connection with contact |40, thus opening the established circuit through solenoid 32 on carrier 33 and transferringthe connection of the cross-arm'from the push button circuit to the polarized magnet circuit. As the rotating of the cross-arm resulted from the jump-up of the solenoid plunger on the carrier,

thel above movements were quick. Simultaneously, cam |23, of which one end had normally engaged with latch |4,| secured to the bottom of 'support- |23 wasrotated to the position where its other end engaged withl latch |4| and the cross-ann was thus locked in rotated position. Figs. 25 and 26 show other Yviews of this latch. Slmultaneously'pin |23 moved contact |42 out of connectionwith contact |43, thus disconnecting the corresponding cross-arm on the opposite face of the controller and rendering it dead, to provide against interference. As carrier solenoid 32 has been de-enegized', its plunger descends, transmittlng electric impulses through the contacted cross-arm to the connected polarized magnet in the push button box. As the crossarm is returned to normal, pin |24 returns flyer |29 and with it4 contacts |33 and |42 to normal, but flyer |30 is prevented from returning by latch |35. This results in the opening of an air gap between plate |33 on flyer |23 and flyer 433, but as contact |44 is touching flyer |30 and is likewise permanently connected to contact spring |3|, the continuity of electrical connection between the two contact springs |3| and |32 is maintained. onnearing the completion of its return to normal. yer |29 against-the llower extremity of catch |33, which releases yer 133, whose spring |32 returns it to normal contacting position with plate |33 on flyer |29, but |33 leaves -contact |44 before it reaches its normal contacting position and the continuity of the push button circuit between its line terminals is thus momentarily interrupted, and the push button holding magnet releases.` I a On support |23 are pivoted two plan view of insulated reversing switch |43 on carrier 33, which is actuated by the'traveling movement of the carrier as it approaches cams |43 adiustably secured to guide"3| atthe terminals of the carriers travel, as shown in Fig. 14. Fig. 29 shows aside elevation of the reverslng switch movable arm and of the stationary contacts, and Fig. 30 a side elevation of the shaft rocking lever which engages with cam |43 at each end of the carriers travel. Figs. 31 land 32 show other views of cam |43. 'f

By reference to Fig. 28 and to Figs. 13 and 14, it will be observedthat any carrier moved from the controller by swinging hinged frame |05, detaching the counter-weight cable 69 and removing two shoes 59, when the carrier may be lifted out as a unit. Should it be desired to remove a carrier without interfering with the operative functioning of other carriers, the carrier is run below'thelowest cross-arm, or to a vspace between cross-arms if express elevator service' makes intermediate space available, and there removed without swinging frame |33. As the describedcarrier units are identical, any unit may be quickly replaced by another unit.

To allow time for an intending passenger to place himself 'at the doorway of the serving elevator before the elevator arrives at that doorway, it has been customary to arrange flashlight systems to signal the landing when the serving l ff' '7- Fig. 27 shows a front elevation and Figfz a' maybere-l elevator is a little less than three floors away,

but, to avoid confusingthe operator, it has been necessary to withhold the stopping signal to the operator in the car until the car has'passed the I iloorimmediately preceding thatatv which the stop is to be made. When a car, which is subject to call from all floors. is at a terminal floor, it

is obvious that special provision should be made for calls which are only one. or two floors away.

Figs. 33, 34, 35, 42, 43, 44, and 19 havev to dawith such provision. Referring to Fig. 11, it will be' observed that with the carrier traveling on the up trip, the vertical position of the carrier with respect to vcam 33 represents the contacting position for the latter's associated the. functioning of the signals at ing landing. The vertical distance between stationary cam 33 and the nearer end of .lower cross-arms, and

' contact 33 mounted on the carrlerrepresents thedistance 'to be traveled by the carrier before the signal in the car functions, and the further distance represented by the length of contact 33 the correspondapprcnlximately represents the additional'distance to be traveled before all corresponding parts are returned 'to normal: the actual distance being determined by the parts shown in Figs. 16 and 17. Referring now to Fig. 14, let us assume that the controller applies to a sixty oor installation. Then, up cross-arm which I will individually designate as |41, represents the contacting crossarm for the sixtieth iloorrbut the carrier will.

continue to travel up for a distance corresponding with. approximately three more iioors before yit reaches its terminal. If a button has been pressed at the sixtieth noor, the serving elevator rotates cross-arm |41 and sets the con'esponding left guide cam 33. The corresponding signals function at the push button box at the sixtieth floor. As this is a terminal noor with no-up button. but only a down button, these signals function /asdown signals. For .intermediate oors, the parts are returned to normal as the car passes the floor, but it does not pass the terminal floor.

After serving the terminal, it reverses and starts i on its down trip. Hence, cross-arm |41 must be returned by a special provision. Figs. 33, 34. and 35 ,show three views of such provision. YStraddle cam m is adjustably secured to ien hand guide 60, straddling the cam 83. The lower toe of its movable member |49 is spring-held against hinged portion 84 of cam 83. The normal positions of both are shown by dotted lines in Fig. 35. Ifa button has been pressed at the sixtieth oor,

the rotating of cross-arm |41 has brought bothr 84 and |49 into` the fullrline or engaging posi-y tions. A third arm |50 has'been secured toishaft III shown inFigs.` 16 and 17. In these igures, arm ||4 is shown on the carrier side ofside bar .||6. This third arm |50 occupies approximately thesame position on the other side of side bar I I0.

For intermediate doors, arm ||3 engages with..

hinged portion 84 of. cam 83 on the' up trip and rotates shaft' but does not engage on,v the down trip. |50 does not engage with hinged arm |49 of straddle cam |48 when the carrier is `moving up, but'it does engage when the carrier' starts down from its terminal,-y and thus rotates shaft returning cross-arm- |41- and related cam 83 to normal in manner similar to the action of arm I3 with respect to similar intermediate parts.' When the carrier is at itsA upper terminali it is in contacting position for down cross-arm |5|. 'I'hrough connections which will be later described, if a down push button on any or all of floors fifty-nine, `fifty-eight or nity-seven have been pressed, as soon as theserving elevator starts down, its carrier will effectively contact with cross-arm |5|, rotating this ycross-arm and -setting corresponding camF 83. The return of these at the proper time will be effected by arm ||5 in Figs. 16 and 17, as has been previously described. Cross-arm' |52 is 'the down crpss-arm for the fifty-sixth floor and |53 is the down cross-arm for the iifty-ilfth floor. 'I'heir functioning is the samev as that of any other intermediate cross-` arm. lI will now describe vthe interrelations between the.down signal parts pertaining to the iiftyninth,'fty`eighth and fifty-seventh floors. In Fig. 14, |54is the down cross-arm ,pertain.

ing to the fifty-ninth floor, and |55 is the down Similar to the cam friction for holding a'cr0ss' arm in rotated position as shown ln Figs21 and 23, locks the cross-arms in rotated position. Through the medium of. arm 222, which is secured to back cross-arm |51, pusher 222, which is also supported by hinged arm 224; is projected through fthe opening in frame |05 Lon the face `oi the controller; until 2 23 impinges upon the left end of cross-arm |54 and rotates it. Front cross-.-

arm |54 is equipped with a spring whlchltends tov keep it in normal position. When 4it is rotated, it is maintained in rotated position only` so long as the cam friction on"back cross-arm |51 maintains it there. As the relation between pusher 223 and the front cross-arm isan impinging relation only, the swinging of controller frame |05, when desired', is not interfered with.

Aseparate but similar arrangement provides for the rotating of back `and front cross-arms as represented by'cross-arm position |55. A third electro-magnet |56 rotates back cross-arms corresponding with the fifty-seventh oor position, but these do not mechanically rotate the front cross-arms |5|. Should the controller have only one face, the pin and fork and the parts rotated by their use would not be required. Fig. 19 shows,

vation of the left guide cam's V63 corresponding v with cross-arms |54, |55 and |5|, pertaining to ythe down signaling for :doors fty-nine, ftyeight and fty-seven, respectively. Cams 83 corresponding with cross-)arms |54 and |55 are ofythe regular type as shown in Fig. 18. The hinged portion oi' Acam 83 `corresponding with :cross-arm Isl is divided as shown in Fig. 19, into |60 is a shaft' on the axis E parts |58 and |59. of whichthe hinged portion of al1 three of these cams rotates,`as does also an arm carrying part |59. Part |58 is secured to shaft |60 and when it is struck by the cam setter on the carrier, vwhen the latter is actuated by its energized solenoid, it

rotates shaft |60 and is locked by spring lock |20 on its cam 83, and when it returns to normal, it returns shaft |60 t normal. Shaft |69 is not secured to parts 84 and |59. Clutch sleeves |6| rotate with shaft |60 but may be moved laterally onA shaft |60 by clutch forks mounted on,- their respective back cross-arms as shown in side elevation Fig." 44 when the latter are rotated by the movement of the armatures of their respective magnets |56. Each clutch sleeve has a shoulder which engages with a shoulder on respective part 84 or |59 when the corresponding clutch sleeve is moved into engagement position.A If, then, the push button at the fifty-ninth, the fifty-eighth or the ftyfseventh floor is pressed prior to the rotating of shaft |60-, the corresponding part 84 or |59 rotates, with it, is locked with it and is spring-returned to normal when shaft |50 returns to normal. If any of the three push buttons is pressed after shaft |60 rotates, the shoull ders do not engage. None of this special arrangement is necessary for terminals with relation to which the distance between the terminal floor i and its next adjacent elevator service flor is equal to or in excess of the normal intermediate initial signaling distance; such as the lower ter` minal of an express elevator. f

Fig. 41 shows a circuit breaker, the core of whose magnet is surrounded by two separate coils |62v and |62 arranged to create the same polarity.

The attraction of thearmature against its polepieces separates contacts |64 and |65. |68 is an inertia member attached to the armature. It consists of a spring mounted weight, whose spring is supported on the lower side for some distance from its attachment, to the amature, but is not supported on the upper side. T 'I'his inertia member slightly delays Vthe return of the armature and prevents any possibility of chattering'.

Flg. 40 is a schematic wiring diagram showing the electrical relations between the push button boxes and the controller. It represents a controller with rtwo faces, corresponding with two banks of elevators connected to the same signal system, together with their respective cross-arms,

"-\oi elevators on the left and similarly to those pertaining to the other bank oi elevators on the right. 'Ihe connections to one push button box, consisting of an up and a down push button, each with its electro-magnet, electric globe, polarized magnet, "Remote switches and Remo electric globe pertaining to one bank of elevators are shown on the left, and the connections to a similar push button box pertaining to the otherl bank of elevators are shown on the right. Each intermediate floor has asimilar, arrangement of pushbutton boxes. For terminals, one push button and its related parts for each bank sumces. The push button boxes for the two banks of elevators are cross-connected at each iloor. Ii' the individual system includes only one bank of elevators, the Remote features, the cross-connected mechanical and 1electrical parts -and the cross-connections at the oors are eliminated. In diagram 40, two sets of carrier parts left of the push button boxes at the several land' ings, and the right set shown in the left bank would be that for the third elevator to the right of the push button boxes for the left bank. This is indicated by their positions with reference to circuit breaker coils |62 and |63 and to thenumber of impulse generator contacts 9|. It will be observed that the right hand guide 6| of the left set is electrically connected to one of the energizing coils |62 on circuit breaker Fig. 41 to positive line and that the right hand guide of the right set is connected through the otherfenersizing coil |63 of circuit breaker Ilg. 4 L-to nega'- tiveline. Ii there were eightelevators-in this bank, there would be four circuit breakers for the bank, and each would have a coil connected to one of the carrier sets tothe left and one to the right in that bank. Refen'ing tothe carrier sets shown to .the right of the diagram, repre' senting the right bank of elevators, the left set of carrier parts would pertain ic the first elevator to the left of the push button boxes at the floors for the right bank. and the carrier set to the right would pertain to the second elevator to the right of the push button boxes at the floors for the right bank of elevators. This is indicated by their positions and nby the number of impulse generator contacts 9| shown in connection with each. If there were eight elevators in the right bank, they would be connected in pairs with respect to circuit breakers Fig. 4l as has been previously described. 10 and 1| represent the up and the down cross-arms respectively for any intermedate iloor. 'Cross-arm |64 represents the special terminal cross-armand and |6| the related near terminal cross-arms when required as have been previously described.

` |68 is an electro-magnet which, when energized,

opens six circuits and closes two.

ing on schedule, up push button I0 for the left bank at any intermediate landing is pressed by an intending passenger. A circuit is established from positive line, through corresponding source of light 20, electro-magnet 6, contact |69, contact |10, cross-arm momentary opening switch |1|, cross-connected cross-arm momentary opening switch |12, individual resistance |13 to negative line. Current flows through this circuit. source i of light 20 is energized and electro-magnet 0, which now acts as a holding magnet, maintains normally separated contacts |69 and |10 in connected position. Normally separated contact |14 has been simultaneously connected with contacts,-

vators: For these, circuit is established from'positive line through respectivsource of light 20, electro-magnet 0, contact |69 of the up`push button for the left bank, and its related contact |10, through the cross-arm momentary opening switches |1| and |12-and resistance |13 to nega'- tive line. It will be understood that cross-arm momentary opening switch |1| or |12 represents the combination of |32, |90, |93, |9| and I shown in Figs. 22 and 54. This energizes the electro-magnet oi the up push button for that.

oor of the right bank of elevators, and the magnetically iniluenced movements of its armature connects together its contacts |69, |10 and |16, and I have a circuit as represented by rig. 36. II |15 in Fig. 36 represents a point midway in the resistance values ot this circuit, it also represents a point midway in the potential 4or voltage values ofl this circuit. Hence, if, while the above circuit persists, I establish a second circuit havlng resistirme, between |15 and either side of the line,- current will ow in this second circuit,

but in opposite directions, depending upon the With the circuit established as in Fig. 36. the

' up push' button"at that iloor for both banks of eleyators will be illumined and will remain illumined, irrespective oi' which button has been manually actuated. The intending passenger who has p ressed a button will thus be notied thathiscallhasbeenregisteredandsolong as the button continues to be illumined, he will know that his call continues to be registered and thathewillbeservedbytherstelevator approachingthatiioorontheuptrip. Therewill be no doubt about it. If anything interferes with the registration of the call, the button will be immediately darkened, thus notifying the intending passenger. and he will again press the button to re-register his call. Any other intend# ing passenger approaching either bank oi' elevators wlll`be similarly notied;

Contacts |69, |10 and |10 are those which are grouped under the 'number in Figs. 'I and 8a. Momentary opening switch |1| or |12 represents the arrangement of iiyers |29 and |30 In conjunction with contacts III, Il! and I in Fig. 22 to eiect a momentary opening of the push button holding magnet circuit, and whose wiringdiagramisshowninl'lg. 54. Itwilibenoted that in Fig. 40 a tap is led from the established circuit at apoint which is indicated by position |15 in Fig. 36, to non-interference contacts |49,

which, through their connecting contacts 4424 75 v electncmy connect through contacts m with up cross-arms 1li for the two banks of elevators; thus sensitizing both of these cross-arms. As has been previously pointed out, no-carrierspassing these cross-arms on the down trip `would normally contact with these cross-arms. Y When, however, the carrier corresponding with the rst elevator to approach the calling iloor on Vthe up trip effectively contacts with either of `the two sensitized cross-arms 10, that cross-arm is rotated. The contacting may correspond with any one of the sixteen elevators in the previously mentioned installation. Il' it is a cross arm pertaining to the left bank of elevators, its rotating has moved it out of contacting position for any other carriers pertaining to that bank of elevators, and the pressure of pin against contact |42 as shown in Fig. 21 has interrupted the latters connection with contact |43, and cross-arm 1l pertaining to the right bank of elevators is no longer sensitized and contacting by passing carriers on the up -trip will have "no effect. The energizing of solenoid 62 of the effectively contacting car- 'rier was effected by current passing through the cross-arm and the contacting bell crank to swivel plate 19 on the carrier, which is permanently connected to its contacts 93a in the solenoid circuit, and through the solenoid and reversing switches 94 and |45\ to one of the insulated shoes 59 on the carrier. to left hand guide v6|), which is connected to negative line. 'Ihe 'resulting relation to the established push button circuit 'is shown in Fig. 3'1.

In rotating, left cross-arm 10 has interrupteditsconnection with contact |39 and connected itself through contact 7|49 with corresponding polarized magnet 9, one side of whose coils is already connected through contacts |14 and |10 and momentary -opening switches |1| and |12 to a point in the established push button circuit represented by |15 in Fig. 36. On the descent of solenoid plunger 63.01' this eectively contacting carrier, electric impulses are transmitted to corresponding polarized magnet 9.

If this carrier corresponds with an elevator in that bank to the right of the push button` box, the relation of the energizing circuit to the established. push button Simultaneously with the nrst movement of the armature of polarized magnet 9, one of the related Remote switches |9 has been closed, completing a circuit from positive line, through) switch I9 and electric bulb of the Remote space Y 2 related to the up `'push button for the oppositef bank of elevators, to negative line. 'I'he action of' the polarid magnet has resulted in the illumining of one or more spaces to the left or to the right of the up push button pertaining to the left bank of elevators, and in the sounding of identifying signals as has been previouslydescribed. While the up push button corresponding with the right bank of elevators still glows. no further change has taken place with respect to that push'button, except the illumlning of its related Remote" space 2 which visually noties any intending passenger who is observing that push button, that the serving elevator is' on the side ot the landing served by the other bank oi' `magnet 8. Comparing Fig. 39 with Fig. 36, the

position for the down schedule trip; and one with elevators, and hev may visuallyestablish its iden-- tity by looking at'the pushbutton box 4'on the other side of-the hall. 'I'he attention of any intending passenger facing either bank of elevators has been audibly attracted by the sound signals 5 emanating from the left bank push button box, and these have audibly ident'ied the serving elevator as has been previously described. Had the serving elevator been in the right bank, the Re' mote signal 4would have appeared in the left bank 10 push button box and the identifying action would have taken place'inthe right bank push button box, through corresponding parts and circuits similarly disposed. y

On comparing Fig. 37 with Fig. 36, it will be 15 apparent that while the latter obtains, more current will flow through magnets 8 and sources of light 29. 'I'his obtains, however, only for the time required for solenoid plunger 63 to jump up.l Comparing Fig.`38 with Fig. 36, an increase also occurs, but only during Athe brief period in which generator arm 33 is in contact on its down stroke with one of the contacts 9|. In neither case does any harm occur to sources of lightlll, nor to current increases .through resistance |13 and decreases through magnets 3, and sources of light 20. When' this occurs, however, the air 'gaps of magnets 8 are closed and they still have ample holding power, and no harm occurs to sources of light 2D nor to resistance |13.' With'a single bank of elevators, instead of a double bank, in the system, there would be but one magnet 8 and one source of light 29 in series with resistance |13, and ristance values justed to correspond.

'I'he connections for the down push buttons are relatively the same as those for the up buttons, but as the down cross-arms rotate in the opposite direction, the corresponding contacts are oppositely disposed as compared with those related to the up cross-arms.

The purpose of circuit breaker Fig. 4l whose coils |62 and |53 are shown in Fig. 40, isl to avoid any possibility of short circuit due 'to two carriers, whose right hand guides are connected to opposite sides of the line, effectively contacting with the saine cross-armA at the same time. The instantaneous jump-up of any carrier solenoid moves the cross-arm :out of contacting position 53 would be adfor all other carriers, and further, the short circuiting could occur only with the impulse generator arms of the two carriers contacting simultaneously on the down stroke.- Normal current in f coil |92 or |63 does not open the circuit breaker, 55 but excess current does.

K While the 'iloor signals have #functioned for the ,beneiit of an intending passenger, the op-A erator of the serving elevator has, as yet, no knowledge that that iloor has called, but when cross arm 1I was rotated, corresponding cam B3 had its hinged portion 34 moved into alignment and locked. vI will now return to reversing switches 94 and |45 on the carrier. The former is operated by friction nut 91 and reverses when- 65 ever screw 96 reverses. irrespective of the position of carrier 59. Reversing switch |45 reverses only when mechanically contacting with cam |46 at the carriers terminals of travel. Fig. 40 shows the reversing switchesn four different relations: one with both moved to the left, thus representing their normal position for the up schedule trip; one with |45 to the left and 94 to the right; one with both to the right, representing their normal |45 to the right and 94 to the left. When the continued up movement brings carrier contact 86 into electrical contact with aligned cam 83, a circuit is established from negative line, guide 60, cam 83, contact 86, reversing switch 94, counterweight cable 69 and counterweight sheave |09 to visual signal |16 and audible signal |11- in the corresponding elevator car, and thence to pesitive line. Usually, visual signal |16 is an electric globe and audible signal |11 a single stroke gong. They may be connected in series or in shunt, or only one may be employed. Reversing switch 94 renders contact 81 dead-on the up trip. On the down trip 94 connects contact 81 to the car signals and renders contact 86 dead. 94 also controls the circuit through reversing/switch |45.

I Referring to the connections of these two reversing switches as shown in Fig. 40, for the up trip, should the operator run by an intermediate landing and then reverse and run back to serve that landing, swivel plate 19 would be rotated and bell crank v11 brought into contacting position for any sensitized down cross-arm which it might encounter on the run-back. While it would mechanically contact, it would not effectively contact,'for`the rotating of swivel plate 19 would have also moved reversing switch 94, and under n these conditions, bell crank 11 would be dead.

Hence, no wrong signals would be transmittedeither to the landing or to the car. The combination of these two reversing switches'aifords like protection on the schedule down trip. Y

Switch |18 is in the elevator car. Should the operator of a fully loaded car wish to run by landings without responding to possible calls, he would Open this switch.`

The manner of the return of controller and push button parts to normal has been described.

When momentary opening switches |1| or |12 either Fig. 38 or 39. At the time of this opening impulse generator arm' 88 is not on any contact.

ment for each intermediate oor, for a sixteen.

elevator installation as described, requires six re- -turn conductors. This compares with thirtyfour return conductors required by any system using an individual returnfor each up and down button and each up and down signal light over each elevator doorway. My system also provides convenience, freedom from confusion, a responsive feature, visual and audible directional and identifying signals, and Remote signals. J

I will now describe the connections` to the ter; minal special cross-arms and relatedparts, when such are required, for illustrative purposes speaking of these as applying to the upper terminal of a sixty oor installation. If a button has been pressed at the sixtieth floor, the carrier of the rst elevator approaching the sixtieth oor effectively contacts with the corresponding crossarm. This, together with its contact pivot block, ls similar to any intermediate Afloor up 'crossarm 10 and block 14, and the signals function at the sixtieth iioor and in the serving car. As the car gets close to the sixtieth floor, the car visual signal is darkened by the reversal of carrier reversing switch |45. The visual signals at is controlled by the return of cross-arm 10. Re-

' ing push button box ori-boxes.

ferring to Fig. 40, conductor |19 is connected to.

contacts |10 of the down push button for the two banks of elevators at the fifty-ninth oor, conductor |80 is similarly connected at the fiftyeighth floor, and conductorv |8| is similarly connectedat the nity-seventh floor. yConductor |82 is connected to polarized magnet 9 corresponding With the down button for the left bank of elevators at all three of these floors, and conductor |83 is similarly ,connected for the right bank. All other connections at these three iioors for the down push buttons and their related parts are the same as for any intermediate floor. Conductors |19, |80 and |8| are normally connected together and to conductor |84 by armature |85 of electro-magnet |68. If thevleft bank down push button on the fifty-ninth floor is pressed, its local connections being similar to the'con- 'nections oi'` a down push button at any intermediate floor, circuit is established from positive line, through its corresponding source of light 20, magnet 8, contact |69, contact |10, conductor |19, momentary opening 'switch |12, contact |86, contact |81 and corresponding magnet |56 I down button of the right bank, and both buttons are illumined. Similar results Lwould follow ln similar manner, the pressure of a down push button at the nity-eighth floor: the connection between push button and controller being through conductor |80, and at the fifty-seventh floor through conductor 8|, except that 4in this last case the circuit continues from conductor |8| through momentary opening switches |1| and |12 `direct to corresponding magnet |56 and thence to negative line. It will be observed that in each case magnet |56 has taken the place of resistance |13 of, an intermediate push button circuit.

Immediately the serving elevator starts down from the sixtieth oor, corresponding up crossarm 1I is returned through the action of special arm |50-'on smit as shown in Figs. 33, 3,4 and 35, and the visual signals at the sixtieth floor are darkened.4 As screw 96 turns, it turns friction nut 91, which reverses reversing switch 94, moves up bell crank 16 out of contacting position and down bell crank 11 into contacting position, and the latter contacts with down crossarm |5|.` If the down push buttorrat the fiftyninth, the fty-eighth, or the nfty-seventh'floor has been pressed, or the button at any one or two -|5| will be sensitized. This is due to the connecting together of the several push button circuits through bar |85, which also loins them through conductor |84 and contact |43 and |42 and contact |89v to cross-arms |5|. The crossarm movement resulting from the energizing of each of the three magnets |56 has been described. 'I'he carrier solenoid jumps up, rotates its correspending cross-arm |5|, rctates shaft |60 in Figs. 43 and 44 and with it any one, two or all three 84 and |59, depending upon which buttons have been pressed, and |58 secured to shaft |60 is locked. The carrier plunger descends and transmits its signal impulses to the correspond- As to the manner of this transmission, ,if the serving elevator is in the left bank, left cross-arm |5| has beenrotated and right |5| has been rendered dead by the separating of related contacts |42 and 43. In rotating, left |5| has transferred its 'connection to contact |40 and conductor |82, which is conleft |5| is rendered deadl and through conductor |83, any effectively connected polarized'magnet in a right hand push button box is energized.

The signsung is the same as with intermediate floor push button boxes.

In rotating |5|, contact |88 was connected to contact |00. A circuit was thus established from positive line, through contact |90, contact |89, and magnet |68, to negative line, moving bar out of contacting position with respect to conductors |19, |80, |8| and |84 before the impulsesV were transmitted, and polarized magnets whose related buttons had not been pressed were thus not affected by the impulses. Simultaneously, armature mounted bar |85 moved contacts |86 out of connection with contacts |81 and linto connection with contacts |88. 1|86 connected with |88 before leaving |81. This latter action substituted resistances I9| for magnets |56 in the push button circuits pertaining to cross-arms |54 and |55, for the purpose of de-energizing these magnets before the return of their respective-cross arms. If cross-arm |54 has been rotated, it' is vreturned by arm ||6, Fig. 16, after the landing has been served, and related switch |12 is momentarily opened, returning correspond, ing push button box parts to normal. The same applies to cross-arms |55 and |5| and their related parts. 'It was not Anecessary to substitute resistance for' magnet |56 related to cross-arm |5|, as this cross-arm is not mechanically connected to magnet |56, being rotated by its contact fingers 12.

Should it be desired to have more than one Push button box at 'a floor related to the same bank of elevators, I make a slight change in the arrangement. For instance, assume that there are six elevators in the bank and that two push button boxes are desired; one between the second and third elevators and one between the fourth and fifth elevators. left hand end ofthe bank would be the second elevator to the left 'of the first of the above push button boxes, but the fourth to the left of the second of the above push button boxes. I arrange that the impulse generator on the corresponding carrier shall send four impulses.k On the rst of the above two push button boxes, I close the third and fourth illuminable spaces to the leftof the push button, with decorative inserts, and change the notched outline of light baffle 1 on that side so that the opaque body of the baille is deeper by the depth of two notches for each of the first two positions on that side. The first two impulses move the ballleas usual, but do not open any light ports on that side. 'I'he Ythird impulse opens the light port for the space next to the button and the fourth impulse opens the port for the second space from the button. The baille on that side of the button in the second push button box has not been changed. l'he four impulses therefore indiate that the serving elevator is the fourth elevator to the left Vof the second push button box and that it is'the second elevator to the left of the first push button box. To provide for the correct number of hammer strokes for the audible signal in the rst push button box, I actuate this hammer by means ofan electro- Then, the elevator-jat theA magnet, insteadof directly from shaft 34. The contacting for this electromagnet is effected through the movement of segment hub extension 53 and stationary contacts corresponding with its position on the third and fourth impulses. 'I'he details of this contacting are shown in Fig. 53 referred to in a later description of audible signals or announcements by reproduction of human speech instead of by hammer strokes. By corresponding suitable changes I can therefore arrange for any desired disposition of push button' boxes.

In Fig. 9, I showed the provisions for two separate indications at illuminable "Remote space 2 and in Fig. 51 I show a wiring diagram for such arrangement. It will be evident that I can also effect the illumining of space 2 through the medium of contacting effected by the movement of segment hub extension 53, in response to the final impulse of any series, should conditions require such contacting.

In Fig. 1l, I indicate contact 86 or 81, mounted on the carrier, as a means for effecting a single contact with guide cam 83. In Figs. 47, 48 and 49, I show three views of this contact elaborated into a switch mechanism for opening or closing a multiplicity of electric circuits.

In Fig. 40 I show visual signal |16 and audible signal |11 in the car connected to function simultaneously, and have mentioned that operators sometimes run by signalled landings. This may be due to inattention, in which case the combination of an audible with a visual signal in the car is 0f assistance. However, its occurrence is largely due to the fact that an operator has been receiving his signal when the car is only something less than one floor away from the floor at which he is to stop. The increased elevator speed which has been recently sanctioned will accentuate the difficulty attached to stopping within this limited space. In Fig. 50, I have shown contact 88 or 81 approaching a cam 83. On first ytouching cam 83, audible signal in the car |11 sounds; later, visual signal |16 is illumined. The length of the second contacting level of the moving contact is less than that corresponding with the height of one floor. However, the total length of the moving contact 1s considerably greater than the vertical distance between twok floors.

'I'he result is that the operator receives' two separate signals, one audible and one visual, with a time element between, and has a longer time in which to prepare for his stop. If two consecutive landings have been signalled, the fact that the length of the traveling contact is greater than the distance between the two consecutive aligned cams 83 causes no confusion, as the toe of the traveling contact is raised out of contacting position for the second cam until the first encountered oor has been served, and the audible signal is sounded for the second encountered floor before the car can attain full speed after serving the rst. Fig. 51 has been previously described as pertaining to two Remote locations.

In describing wiring diagrams, I have spoken of positive and negative line, indicating a direct current supply. By the use of proper magnets, I can employ alternating current, but, instead of one polarized magnet, I then employ two separate electromagnets for functioning the segments in the push button box, with correspondling increase in the'number of connecting conductors. I also employ two separate magnets, in conjunction with a direct current circuit, to meet camra any condition to` which the use oi.' a single ized magnet is not suited. v

I have described the audible signals at iloors by hammer strokes and will now describe the manner in which I provide audible signals or announcements at floors by reproduction of human s peech.

Loud speakers are provided adjacent to the pushbuttons, in conjunction with phonograph polarrecords corresponding with each car. With se- L lective switching between a reproducer on the phonograph andthe proper loud speaker, the announcement is made. l v

Fig. 53 shows one of the reproducers 213 with its horn facing a transmitter 300. Each combination of horn and transmitter is soundproof from eachother such combination. One side of individual battery 30| is connected to transmitter 300 and the other side to common Wire `302 extending to the bottom of the hoistway. Transmitter'300 is also connected through switch 303 to individual conductor 304 extending to the bottom of the hoistway. 28 is the-segment in the landing push button box contrnllingthe movement of the light baille to the right of theup push button. 53 is its hub extension and 5| is the corresponding suspension, both of which latter are properly insulated. 305 isva dashpotme chanicallylinked to suspension 5| for the purpose of slightly delaying its downward movement without interfering with its upper movement. Stationary contacts 306 have been added in the path of hub extension 53. The third contact 306 from the top is shown connected to vconductor 304. In addition to the contacts previously described, normally separated contacts 301 and 308 are shown in a position to be electrically connected when the up push button is pressed. 298 land'29il are the loud speaker and horn-corresponding with the up push, button. 90, 88 and p 9| are parts of the impulse generator on the carrierl 58 corresponding with the third elevator.A

to the right of the push button box, as described in Fig. 1l. 288 is the electromagnet which moves the needle of the corresponding reproducer 213 in Fig. 53 into contact with its sound track on a constantly lrotating phonograph record during the period ofl its announcement. |63 is the corresponding coil of the circuit breaker shown in Fig. 40. For an elevator to the left of the push button box, this coil would be |62. As has been previously described, when push button I0 is pressed and the third elevator to the right isI the serving elevator, hub extension 53 will eventually be moved and come to rest at a position A corresponding with that of the contact 306 connected to conductor 300. In bringing this about, arm 88 of the impulse generator on its downward stroke would' have successively connectedwith three contacts 8| and would at the last have momentarily connected with contact |02, connecting it (in this instance) with coil |63, A cirl cuit is momentarily established from negative line, through -coil |63, arm 80, arni8k8, contact |02 and magnet 288 to positive line, and the needlejof corresponding reproducer 213 contacts with its corresponding soundtrack on a phonograph disc and the recorded announcement is reproduced. The circuit by which it is Atransmittd from corresponding transmitter 300 pto corresponding loudspeaker 288 may be traced from positive battery 30|, through transmitter 300, switch 303, conductor 304, connected contact 306, extension 53, suspension 5|, connected mon wire 302 to negative battery. None but the correct announcement can be transmitted to loud speaker 298 as the rst impulse from the impulse generator separates' 53 from 5|, and they do' not again electrically connect until 58 has come to rest on the contact 306 corresponding with the total number of impulses generated. Before the return of 5| and 53 to normal, the loud speaker circuit is opened at contacts 301 and 308. Switch 303 was introduced to show that the battery and individual conductor oi any transmitter may be arranged to be transferred at will to another transmitter for the transmis-- sion of a. diierent disc record, or fora special announcement directly by the human voice, or for any other sound transmittal'. 'Ihe other three transmitters are shown connected to their individual batteries and conductors and are supposedly disposed as described in conjunction with their respective reproducers.

The recorded announcement in any sound track .pertains to one elevator only. The recorded announcement in any sound track pertains to but one ldirection .of elevator travel. This announce-4 ment is automatically reproduced at any floor. It is always a complete announcement. Forthe sixteen elevator, sixty iloor installation there I With the loud speakers and selective system available, the way is also opened for locating individuals, transmitting reand -burglary-alarms,

'making announcements and providing entertainment at one or many locations.

I will point out that while I have mentionedr yand shown positive and negative. line, which would indicate a direct current supply, I function electric globes and non-inductive resistances quite as readily from an alternating current supply, and utilize appropriately constructed electro-magnetic units, but I cannot employ the polarized magnets on an alterating current circuit. When the current supply is alternating, or ii' for any other reason the polarized magnets are un- Isuitable, I displace them with two electro-'magnets. This necessitates two return conductors instead' of the one required by the,`polarized magnet.

For non-business hours, whenh elevators are not operating on schedule,- it is customary to so change the system oi callingirom those iloors above the ground floor, ,that the pressurev of a button at one of these upper floors energizes an audible signal within hearing of an operator or watchman normally stationed at the ground floor, who then operates an elevator to answer the call. With some arrangements for this purpose, the audible lsignal at the ground floor has been accompanied by no further indication, and if, for instance, the down button at the third door was pressed, it was necessary for the operator to run his car the entire height of the building and then run down, and it was not until he reached the third iloor on the down trip that he learned the location 4o1' the intending passen- 

